Is this vulnerability remotely exploitable?

Yes. As described, an attacker who can reach the API over the network can attempt to change the recovery email without prior authentication.

Does exploitation require valid user credentials?

No. The core issue is the lack of authentication on a critical endpoint, so valid credentials are not required for exploitation.

What is the safest general fix pattern?

Enforce mandatory authentication and proper authorization checks on any endpoint that modifies account recovery or security settings, ideally combined with step-up verification for such changes.

Severity:

CRITICAL RISK

(9.8)

Missing Authentication for Forgot-Password Email Change API (CWE-306)

CVE-2026-1670

Published:

Feb 17, 2026

Status:

Awaiting Analysis

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

Remote Code Execution on the Router

April 6, 2026

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Remote Code Execution on Router Firmware

April 6, 2026

Vulnerability Type

Category:

Missing Authentication

CWE:

CWE-306

Impact:

Account Takeover / Loss of Account Control

Severity:

CRITICAL RISK

(9.8)

CVSS Version:

3.1

Vulnerability Type

Category:

Missing Authentication

CWE:

CWE-306

Impact:

Account Takeover / Loss of Account Control

Severity:

CRITICAL RISK

(9.8)

CVSS Version:

3.1

Catch This CVE While Code Is Being Written

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355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

Missing Authentication for Forgot-Password Email Change API (CWE-306)

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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